﻿// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.Collections.Generic;

namespace ICSharpCode.AvalonEdit.AddIn.Snippets
{
	/// <summary>
	/// Compares code snippets.
	/// </summary>
	public class CodeSnippetComparer : IEqualityComparer<CodeSnippet>
	{
		public static readonly CodeSnippetComparer Instance = new CodeSnippetComparer();
		
		public bool Equals(CodeSnippet x, CodeSnippet y)
		{
			if (x == y)
				return true;
			if (x == null || y == null)
				return false;
			return x.Name == y.Name && x.Description == y.Description && x.Text == y.Text && x.Keyword == y.Keyword;
		}
		
		public int GetHashCode(CodeSnippet obj)
		{
			return obj != null ? obj.Name.GetHashCode() : 0;
		}
	}
}
